| 直膨式太阳能热泵用于温室番茄根际-空气加温的试验研究 |
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| 引用本文： | 和永康,杨其长,张义,方慧,柯行林,魏晓然.直膨式太阳能热泵用于温室番茄根际-空气加温的试验研究[J].中国农业大学学报,2019,24(4):124-135. |
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| 作者姓名： | 和永康 杨其长 张义 方慧 柯行林 魏晓然 |
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| 作者单位： | 中国农业科学院农业环境与可持续发展研究所/农业农村部设施农业节能与废弃物处理重点实验室 |
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| 基金项目： | 基本科研业务费（Y2018PT83）；科技部国际科技合作专项项目（KY201702008） |
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| 摘 要： | 针对直膨式太阳能热泵所集热能利用率低,温室加温不足的问题,采用直膨式太阳能热泵为集热系统,根际-空气加温为放热系统,对大跨度主动蓄能型温室在不同天气仅根际加温和根际与空气同时加温的加温效果,集、放热系统运行性能,集热效率,热能利用率,节能率和集热系统的优化运行模式进行研究。结果表明:1)连续阴天和连续晴天,放热系统的热能利用率分别高于97.2%和92.7%;2)不同天气试验区的根际温度在17.9℃以上,比对照区高1.5℃,空气温度在11.6℃以上,比对照区高3.6℃,相对湿度在90.8%以下,比对照区低3.2%;3)不同天气整套系统的节能率R在47.2%以上,性能系数在1.9以上;4)不同天气集热系统均能在设定时间内达到设定集热温度目标,且其集热性能系数COPc在2.3以上,其集热效率在149.6%以上;5)9:30—11:30集热系统COPc随太阳辐射强度的增大,从1.4增大至3.0,11:30—14:50集热系统的集热性能系数均高于3.8,15:10以后,蓄热水池水温高于47℃时,集热性能系数由3.2最终降至0.8。该研究表明根际与空气结合的加温方式不仅提高了温室加温效果,还提高了热能利用率和直膨式太阳能热泵的集热性能。此外,根据集热条件调节集热系统的运行模式,可提高集热性能,达到温室加温节能的目的。
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| 关 键 词： | 大跨度温室 直膨式太阳能热泵 温室加温 性能系数 运行模式 根际加温 |
| 收稿时间： | 2018/7/10 0:00:00 |
Experimental study on the rhizosphere-air heating with direct-expansion solar-assisted heat pump of tomato in greenhouse |
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| HE Yongkang,YANG Qichang,ZHANG Yi,FANG Hui,KE Xinglin and WEI Xiaoran.Experimental study on the rhizosphere-air heating with direct-expansion solar-assisted heat pump of tomato in greenhouse[J].Journal of China Agricultural University,2019,24(4):124-135. |
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| Authors: | HE Yongkang YANG Qichang ZHANG Yi FANG Hui KE Xinglin and WEI Xiaoran |
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| Institution: | Institute of Environment and Sustainable Development in Agriculture/Key Laboratory of Energy Conservation and Waste Management of Agricultural Structures of Ministry of Agriculture and Rural Affairs, Chinese Academy of Agricultural Sciences, Beijing 100081, China,Institute of Environment and Sustainable Development in Agriculture/Key Laboratory of Energy Conservation and Waste Management of Agricultural Structures of Ministry of Agriculture and Rural Affairs, Chinese Academy of Agricultural Sciences, Beijing 100081, China,Institute of Environment and Sustainable Development in Agriculture/Key Laboratory of Energy Conservation and Waste Management of Agricultural Structures of Ministry of Agriculture and Rural Affairs, Chinese Academy of Agricultural Sciences, Beijing 100081, China,Institute of Environment and Sustainable Development in Agriculture/Key Laboratory of Energy Conservation and Waste Management of Agricultural Structures of Ministry of Agriculture and Rural Affairs, Chinese Academy of Agricultural Sciences, Beijing 100081, China,Institute of Environment and Sustainable Development in Agriculture/Key Laboratory of Energy Conservation and Waste Management of Agricultural Structures of Ministry of Agriculture and Rural Affairs, Chinese Academy of Agricultural Sciences, Beijing 100081, China and Institute of Environment and Sustainable Development in Agriculture/Key Laboratory of Energy Conservation and Waste Management of Agricultural Structures of Ministry of Agriculture and Rural Affairs, Chinese Academy of Agricultural Sciences, Beijing 100081, China |
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| Abstract: | |
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| Keywords: | large-span greenhouse direct-expansion solar-assisted heat pump greenhouse heating coefficient of performance energy conservation operational mode rhizosphere heating |
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